Towns
| State | City/Town | Town Title |
|---|---|---|
| Florida | Indiantown | Indiantown, FL |
| Florida | Inglis | Inglis, FL |
| Florida | Intercession City | Intercession City, FL |
| Florida | Interlachen | Interlachen, FL |
| Florida | Inverness | Inverness, FL |
| Florida | Islamorada | Islamorada, FL |
| Florida | Island Grove | Island Grove, FL |
| Florida | Istachatta | Istachatta, FL |
| Florida | Italia | Italia, FL |
| Florida | Jacksonville | Jacksonville, FL |
| Florida | Jacksonville Beach | Jacksonville Beach, FL |
| Florida | Jasper | Jasper, FL |
| Florida | Jay | Jay, FL |
| Florida | Jennings | Jennings, FL |
| Florida | Jensen Beach | Jensen Beach, FL |
| Florida | Jupiter | Jupiter, FL |
| Florida | Kathleen | Kathleen, FL |
| Florida | Kenansville | Kenansville, FL |
| Florida | Key Biscayne | Key Biscayne, FL |
| Florida | Key Colony Beach | Key Colony Beach, FL |
| Florida | Key Largo | Key Largo, FL |
| Florida | Key West | Key West, FL |
| Florida | Keystone Heights | Keystone Heights, FL |
| Florida | Killarney | Killarney, FL |
| Florida | Kissimmee | Kissimmee, FL |